The fundamental configuration and design of the compound helicopter
The fundamental configuration and design of the compound helicopter
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DOI：
10.1243/095441003772538570
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发表时间：
2003-06
期刊：
影响因子：
--
通讯作者：
M. Orchard;S. Newman
中科院分区：
文献类型：
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作者：
M. Orchard;S. Newman
摘要复合式直升机作为扩大旋翼机飞行范围的一种手段，具有很大的潜力。自第二次世界大战结束以来，已经进行了大量的研究，尽管不连贯，许多飞行演示复合直升机生产和试验的主要目的是提高直升机的最大前进速度。本文旨在将这些知识与其他领域的相关发展结合起来，不仅说明目前对复合直升机构型的理解水平，而且还利用它来预测最适合未来复合直升机设计的可能构型和技术。在此基础上，提出了最有可能的布局形式是最小面积的低翼，以在最小悬停堵塞的情况下缓解后退叶片的失速，并用平襟翼来减少堵塞和控制旋翼-机翼的载荷分担。在推进方面，导管风扇或螺旋桨被认为是最合适的，由先进的机械驱动或可变循环发动机驱动。旋翼-机翼相互作用和先进的旋翼设计领域也被认为是复合式直升机优化设计中非常感兴趣的主题。
Abstract The compound helicopter has much to offer as a means of expanding the flight envelope of rotorcraft. There have been significant amounts of research performed, albeit disjointed, and many flight demonstrator compound helicopters produced and trialled since the end of the Second World War mainly with the aim of increasing the helicopter's maximum forward speed. This paper aims to pool this knowledge, along with relevant developments in other fields, not only to state the current level of understanding of the compound helicopter configuration but also to use it to predict likely configurations and technologies that would be best suited to future compound helicopter designs. From this basis it is suggested that the most likely configuration will be a low wing of minimized area to alleviate retreating blade stall at a minimum hover blockage, with plain flaps for blockage reduction and control of the rotor-wing load share. In terms of propulsion a ducted fan or propeller are deemed most suitable, driven by either an advanced mechanical drive or variable cycle engine. The areas of rotor-wing interaction and advanced rotor design are also noted as subjects of significant interest in the optimal design of a compound helicopter.